CN101282025B - Method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar - Google Patents
Method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar Download PDFInfo
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- CN101282025B CN101282025B CN200810016435XA CN200810016435A CN101282025B CN 101282025 B CN101282025 B CN 101282025B CN 200810016435X A CN200810016435X A CN 200810016435XA CN 200810016435 A CN200810016435 A CN 200810016435A CN 101282025 B CN101282025 B CN 101282025B
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- baffle plate
- mainboard
- insulation
- isolated
- busbar
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Abstract
The invention relates to a method for repairing indoor bus knife switch moving contact of high tension bus without power failure. The technical proposal includes following steps: breaking high-voltage circuit-breaker to be repaired, pulling bus knife switch, checking whether the moving and static contact is cut off or not and without foreign body; assembling electrification repair dielectric isolation baffle based on pulling bus knife switch moving, static contact surrounding electric equipment condition, shouldering assembled electrification repair dielectric isolation baffle with the insulating rod to put and pull between the moving, static contacts of the bus knife switch, after completely effective separating the electrification part, performing repair of the bus knife switch moving, static contacts; after work to be repaired is completed, withdrawing the electrification repair dielectric isolation baffle with the insulating rod and restoring electric transmission. The invention has beneficial effects of reducing power failure scope, making time of bus power failure processing failure decline, ensuring power supply reliability, improving work efficiency greatly and realizing quick response and operation.
Description
One, technical field:
The present invention relates to a kind of method of overhauling indoor bus disconnecting link moving contact, particularly a kind of method of maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar.
Two, background technology:
At present; indoor 6～10kV high-voltage switch gear disconnecting link in use the distortion of moving contact blade occurs through regular meeting; heating; faults such as compression spring fatigue; disconnecting link must be had a power failure this moment and draw back maintenance; it is moving and the disconnecting link that the domestic 6～10kV of transformer station high-voltage switch gear uses draws back the back; opening between the fixed contact apart from 45 °-60 ° of 20cm-35cm angles are only arranged; and, fixed contact draws back its moving contact of back has only 40cm apart from limit phase bus maximum spacing because being the therefore disconnecting link that is directly connected in bus one side; the charged position of two lateral extent adjacent switches maximum also has only the spacing of 60cm; 10kV safe following distance well below " electric power safety working regulation " regulation is the national standard of 0.7m; both sides do not have reliable and secure quarantine measures again simultaneously; in the case for to guarantee that maintainer's safety must have a power failure high voltage bus; so all loops on this section bus are had a power failure for handling one group of disconnecting link fault; enlarged the accident interruption scope; also prolonged the interruption duration of accident treatment; and increased the workload of person on duty's grid switching operation, easily caused potential safety hazard.
Current, the indoor bus disconnecting link of traditional maintenance moving contact generally is to adopt following way: 1, disconnect the primary cut-out that needs maintenance, draw back the bus disconnecting link, check that the dynamic and static contact of bus disconnecting link really disconnects, there is no foreign matter; 2, disconnect busbar sectional izing switch, draw back two side bus disconnecting links; 3, disconnect this section bus main transformer switch, draw back the bus disconnecting link; 4, identify this section bus and really have a power failure, hanging earthing conductor on bus; 5, remove the bus bar side earth connection after service work finishes; 6, the main transformer switch that closes again after main transformer disconnecting link and check has really got togather that closes; 7, the busbar sectional izing switch that closes again after segmentation two side bus disconnecting links and check have really got togather that closes; 8, the busbar sectional izing switch that closes again after segmentation two side bus disconnecting links and check have really got togather that closes; 9, the primary cut-out bus disconnecting link of maintenance is closed recover to send.
There is following problem in said method: one is that one group of disconnecting link fault outage maintenance will make all current supply circuits on this section bus have a power failure, enlarged the accident interruption scope, the interruption duration that has prolonged accident treatment has caused loss to national product and resident living power utility; The 2nd, complex operation has increased the workload, the particularly operational site of transformer station's main electrical scheme complexity of person on duty's grid switching operation, very easily causes potential safety hazard; The 3rd, maintenance waits for that the bus interruption duration is oversize, and operating efficiency is too low, can't realize sharp work.
Three, summary of the invention:
Purpose of the present invention is exactly the above-mentioned defective that exists at prior art, a kind of method of maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar is provided, and this method can avoid bus to have a power failure, and grid switching operation is simple, the work safety time spent is few, and efficient increases substantially.
Its technical scheme is: may further comprise the steps:
(1) disconnects the primary cut-out that needs maintenance, draw back the bus disconnecting link, check that the dynamic and static contact of bus disconnecting link really disconnects, there is no foreign matter;
(2) assemble mainboard and the side wing that baffle plate is isolated in the hotline maintenance insulation according to charging equipment situation around the dynamic and static contact of the bus disconnecting link that draws back;
(3) use the insulation clamp to insulate and isolate the mainboard and the side wing fixation of baffle plate;
(4) with insulating rod baffle plate being isolated in the hotline maintenance insulation that assembles provokes between the dynamic and static contact of putting into the bus disconnecting link that draws back;
(5) it is firm to confirm that the baffle plate placement is isolated in insulation, and can carry out the maintenance of bus disconnecting link moving contact after fully charged position effectively being isolated;
(6) Awaiting Overhaul is recalled hotline maintenance insulation isolation baffle plate and recover with insulating rod after hours and send.
Wherein, the hotline maintenance insulation of adopting in this method is isolated baffle plate and is made up of mainboard, side wing and insulation clamp, and described mainboard both sides are provided with operation lifting hole(eyelet) and side wing hole clipping; Outstanding tenon is arranged, the side wing hole clipping engagement connection of tenon and mainboard on the side wing; On the insulation clamp draw-in groove is arranged, will insert the tenon fixation of mainboard, be formed with the isolation baffle plate of the rectangular shape of three isolation surfaces.
In addition, two operation lifting hole(eyelet)s are located at the top on both sides that the mainboard of baffle plate is isolated in hotline maintenance insulation, and the both sides that the mainboard of baffle plate is isolated in the hotline maintenance insulation are provided with the side wing hole clipping of two group leader's strips.
The side that the side wing of baffle plate is isolated in the described hotline maintenance insulation of adopting is provided with two groups of tenons that engage with the side wing hole clipping of mainboard.
The insulation clamp that baffle plate is isolated in the described hotline maintenance insulation of adopting is fixed along the tenon of the side wing that the direction of mainboard will be inserted perpendicular to the mainboard direction.
In addition, the body of material that three parts of baffle plate are isolated in the hotline maintenance insulation all is the thick epoxy resin board of 5mm, is applicable to indoor 6～10kV high-voltage hot-line work, and withstand voltage experiment is 35kV/60S, meets national standard.
It is as follows that the method that the present invention adopts and existing method are compared the beneficial effect that has:
The one, the drawback that has caused all high-tension line circuit breakers of this section bus to have a power failure because of dynamic and static contact safe distance is not enough when having avoided a high-tension line bus disconnecting link handling failure, and as much as possible reduced the power failure scope, make the time of bus power failure handling failure drop to zero, guaranteed the reliability of power supply;
The 2nd, easy and simple to handle, only need need assemble still two fast side wings and place by the mainboard that baffle plate is isolated in field condition decision insulation with insulating rod, operating efficiency increases substantially, and has realized fast reaction, sharp work;
The 3rd, safe and reliable, to add the edge insulator that is used for fixing also be insulation board with material because the mainboard of baffle plate and structure that side wing is 3 D stereo are isolated in the hotline maintenance insulation of using in the work, its withstand voltage experiment meets national safety standard fully, therefore can be maintainer and the omnibearing isolation of charging equipment, prevented contacting of maintainer and charging equipment to greatest extent.
Four, description of drawings:
Accompanying drawing 1 is the structural representation that the mainboard of baffle plate is isolated in the insulation adopted of the present invention;
Accompanying drawing 2 be the present invention adopt insulation isolate the structural representation of a side wing of baffle plate;
Accompanying drawing 3 be the present invention adopt insulation isolate the structural representation of an insulation clamp of baffle plate;
Accompanying drawing 4 be the present invention adopt insulation isolate the assembly drawing of baffle plate.
Five, embodiment:
Its technical scheme is may further comprise the steps: (1) disconnects the primary cut-out that needs maintenance, draws back the bus disconnecting link, checks that the dynamic and static contact of bus disconnecting link really disconnects, there is no foreign matter;
(2) assemble mainboard and the side wing that baffle plate is isolated in the hotline maintenance insulation according to charging equipment situation around the dynamic and static contact of the bus disconnecting link that draws back;
(3) use the insulation clamp to insulate and isolate the mainboard and the side wing fixation of baffle plate, baffle plate is isolated in the hotline maintenance insulation that is formed with the rectangular shape of three isolation surfaces;
(4) with insulating rod baffle plate being isolated in the hotline maintenance insulation that assembles provokes between the dynamic and static contact of putting into the bus disconnecting link that draws back;
(5) it is firm to confirm that the baffle plate placement is isolated in insulation, and after fully charged position effectively being isolated by three isolation surfaces, the staff just can carry out the maintenance of bus disconnecting link moving contact in the side operation of the corresponding no isolation surface of mainboard;
(6) Awaiting Overhaul is recalled hotline maintenance insulation isolation baffle plate and recover with insulating rod after hours and send.
Wherein, the structure that baffle plate is isolated in the hotline maintenance insulation of adopting in this method is as follows:
With reference to accompanying drawing 1,2,3, form by mainboard 1, side wing 2 and insulation clamp 3, described mainboard 1 both sides are provided with operation lifting hole(eyelet) 4 and side wing hole clipping 5, its body of material all is the thick epoxy resin board of 5mm, be applicable to indoor 6～10kV high-voltage hot-line work, withstand voltage experiment is 35kV/60S, meets national standard.
Wherein, outstanding tenon 6 is arranged on the side wing 2, side wing hole clipping 5 engagement connections of tenon and mainboard; On the insulation clamp 3 draw-in groove 7 is arranged, will insert the tenon fixation of mainboard.Wherein, the top that the mainboard 1 of baffle plate is isolated in the hotline maintenance insulation of adopting in this method is provided with two operation lifting hole(eyelet)s 4, both sides are respectively equipped with the side wing hole clipping 5 of two group leader's strips, one side of side wing 2 is provided with two groups of tenons 6 that engage with the side wing hole clipping 5 of mainboard, insulation clamp 3 is fixed along the tenon of the side wing 2 that the direction of mainboard 1 will be inserted perpendicular to the mainboard direction, is formed with the isolation baffle plate of the rectangular shape of three isolation surfaces.
When the baffle plate use is isolated in above-mentioned hotline maintenance insulation, after side wing hole clipping 5 insertions on the 6 aligning mainboards 1 of the tenon on the side wing 2, the tenon that will insert mainboard with the draw-in groove 7 on the insulation clamp 3 blocks, draw-in groove on the insulation clamp and the tenon size on the side wing are complementary and therefore can firmly block, and only need then can provoke operation with two insulating rods by the operation lifting hole(eyelet) 4 on the mainboard.In addition, side wing in the accompanying drawing 2,3 and insulation clamp are respectively two, can according to different environments for use, present position and around one of charging equipment situation decision assembling still two all can.Other operation tools all not want in above-mentioned all disassembly and assembly operations, during use assembling fast and simple, and convenient transportation, time spent dismounting placement does not take up space.
In addition, the present invention has tested at Shengli Oil Field electric power parent company internal range and has used successfully, and effect is remarkable.
Claims (6)
1. the method for a maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar is characterized in that may further comprise the steps:
(1) disconnects the primary cut-out that needs maintenance, draw back the bus disconnecting link, check that the dynamic and static contact of bus disconnecting link really disconnects, there is no foreign matter;
(2) assemble mainboard and the side wing that baffle plate is isolated in the hotline maintenance insulation according to charging equipment situation around the dynamic and static contact of the bus disconnecting link that draws back;
(3) use the insulation clamp to insulate and isolate the mainboard and the side wing fixation of baffle plate;
(4) with insulating rod baffle plate being isolated in the hotline maintenance insulation that assembles provokes between the dynamic and static contact of putting into the bus disconnecting link that draws back;
(5) it is firm to confirm that the baffle plate placement is isolated in insulation, and can carry out the maintenance of bus disconnecting link moving contact after fully charged position effectively being isolated;
(6) Awaiting Overhaul is recalled hotline maintenance insulation isolation baffle plate and recover with insulating rod after hours and send.
2. the method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar according to claim 1, it is characterized in that: described hotline maintenance insulation is isolated baffle plate and is made up of mainboard (1), side wing (2) and insulation clamp (3), and described mainboard (1) both sides are provided with operation lifting hole(eyelet) (4) and side wing hole clipping (5); Outstanding tenon (6) is arranged, side wing hole clipping (5) engagement connection of tenon and mainboard on the side wing (2); On the insulation clamp (3) draw-in groove (7) is arranged, will insert the tenon fixation of mainboard, be formed with the isolation baffle plate of the rectangular shape of three isolation surfaces.
3. the method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar according to claim 2, it is characterized in that: two operation lifting hole(eyelet)s (4) are located at the top on both sides that the mainboard (1) of baffle plate is isolated in hotline maintenance insulation, and the both sides that the mainboard (1) of baffle plate is isolated in the hotline maintenance insulation are provided with the side wing hole clipping (5) of two group leader's strips.
4. the method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar according to claim 1 and 2 is characterized in that: the side that the side wing (2) of baffle plate is isolated in described hotline maintenance insulation is provided with two groups of tenons (6) that engage with the side wing hole clipping (5) of mainboard.
5. the method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar according to claim 1 and 2 is characterized in that: the insulation clamp (3) that baffle plate is isolated in described hotline maintenance insulation is fixed along the tenon of the side wing (2) that the direction of mainboard (1) will be inserted perpendicular to the mainboard direction.
6. according to the method for claim 1,2 or 3 described maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar, it is characterized in that: described hotline maintenance insulation is isolated baffle plate and is adopted epoxy resin board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810016435XA CN101282025B (en) | 2008-06-02 | 2008-06-02 | Method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810016435XA CN101282025B (en) | 2008-06-02 | 2008-06-02 | Method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101282025A CN101282025A (en) | 2008-10-08 |
| CN101282025B true CN101282025B (en) | 2010-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810016435XA Expired - Fee Related CN101282025B (en) | 2008-06-02 | 2008-06-02 | Method for maintaining indoor busbar knife brake movable contact without power-off of high pressure busbar |
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|---|---|
| CN (1) | CN101282025B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354326A (en) * | 2013-08-07 | 2013-10-16 | 国家电网公司 | Isolation device for maintaining isolation disconnecting link |
| CN103401166A (en) * | 2013-08-07 | 2013-11-20 | 国家电网公司 | Isolating device for maintaining and isolating knife switch |
| CN103378556A (en) * | 2013-08-07 | 2013-10-30 | 国家电网公司 | Isolating device for maintaining and isolating disconnecting link |
| CN103400716B (en) * | 2013-08-07 | 2016-04-20 | 国家电网公司 | A kind of spacer assembly for maintain isolation disconnecting link |
| CN103390866B (en) * | 2013-08-07 | 2016-05-04 | 国家电网公司 | A kind of spacer assembly for maintain isolation disconnecting link |
| CN104569508B (en) * | 2014-12-29 | 2017-09-12 | 国家电网公司 | A kind of anti-misoperation apparatus of low-voltage metering cabinet |
| CN111599628A (en) * | 2020-05-22 | 2020-08-28 | 广东电网有限责任公司 | Knife switch high-voltage board |
| CN112054429A (en) * | 2020-08-27 | 2020-12-08 | 广东电网有限责任公司佛山供电局 | Insulating baffle |
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2008
- 2008-06-02 CN CN200810016435XA patent/CN101282025B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101282025A (en) | 2008-10-08 |
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Granted publication date: 20101208 Termination date: 20110602 |